Place Value, Grade 2 is a unit dealing with three-digit numbers (place values with ones, tens, and hundreds).
The first lesson presents three-digit numbers using the visual model of the base-ten blocks (hundred-flats, ten-pillars, and unit cubes). Next we study three-digit numbers on a number line. Then, in the lesson Forming Numbers--and Breaking Them Apart, students practice writing three-digit numbers as sums of their parts (in expanded form). These first three lessons provide the basis for understanding three-digit numbers and place value.
Next we study Skip-Counting by Tens, and after that also by twos and fives. Then it is time to compare and order three-digit numbers.
After this, we study rounding to the nearest ten and nearest hundred in two lessons. The last lesson deals with bar graphs and pictographs, which provide a nice application for the three-digit numbers that the students have recently learned.
At http://www.homeschoolmath.net/worksheets/number-charts.php you can create different kinds of number charts for free.
I wish you success in teaching math!
Maria Miller, the author